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More expensive high specification systems can offer connection of all fire detection devices to a common power supply via low voltage transformers, or interlinked fire and security systems. Again, a minimum 72 hour back-up is recommended by the Code. Due to the complexity of A, B and C Grades, we have omitted the descriptions from this short guide.
The problems outlined in grade E alarms can be overcome by using mains powered alarms that incorporate, within each alarm, a stand-by supply such as a primary or rechargeable battery. The alarms have to be interconnected either through wiring or radio-interlink. The mains power supply can come from a dedicated power supply directly from the fuse box or from the nearest permanently powered light fitting, as long as the smoke alarm heads can be removed without removing the base as well.
Grade D is required for new, owner-occupied buildings of up to three storeys, two storey rented properties and existing, owner-occupied buildings of more than two storeys. Very large storeys (>200m2) might require Grade B alarm system.
A question remains for landlords – can they be sure that their tenants are paying their electricity bills? Given that many tenants may have low incomes (in many local authorities, 70% or more of all tenants are on subsidised incomes), they may well experience periods of disconnection – and yet the landlord could well be liable if the alarm fails to sound because the tenant has not paid his or her bills! Unfair or not, as the law stands, it obviously makes good commercial sense to ensure that a reliable, ideally re-chargeable and sealed-in backup battery is in place.
The minimum back-up duration recommended is 72 hours, and the Code acknowledges that there could well be circumstances where a longer stand-by period is justified e.g. tenants’ inability to pay their electricity bill.
The Code does not recommend an application for alarms without back-up power source any longer. Grade E systems have serious drawbacks: power cuts or the termination of supply for whatever reason disables them totally. They can also be rendered useless by the tripping of a protective device, or even – in some cases – by the fire itself. Householders may also disable them at the mains all too easily if false alarms are a problem.
BS 5839: Pt.6 acknowledges the advantages of the single, battery powered smoke alarm. They are simple to install and offer protection at very low cost. Battery powered smoke alarms conforming to BS EN 14604:2005 are recommended. Battery powered smoke alarms are typically suitable for owner-occupied buildings (existing buildings) with up to two storeys. Please note: if your property has multiple levels, it is recommended to have interlinked alarms. This is to ensure you receive the earliest possible warning of fire.
Single story tenanted properties were allowed in the last version (2004) of this standard to be fitted with Grade F alarms. This has now been changed to a grade D requirement. As an aside, landlords have now been found liable in cases where tenants themselves have disabled an alarm. For this reason, it is unlikely that landlords will be able to trust tenants to adequately look after a smoke alarm. The Code highlights the fact that battery powered smoke alarms are also only suitable for owner-occupied properties if the likelihood is, that batteries will be replaced within five days of a low battery signal.
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As a further upgrade to Monitored systems, we are able to offer systems that receive police response. By meeting the strict criteria of EN50131 we are able request that police attend your premesis upon the confirmed event of a breaking. This offers a truly advanced level of inruder detection system integration that satisfies both personal and Insurers requirements. We offer a free consultation with absolutely no obligation advice. For further advice or to book a Free Survey please select our contact page at the top of our website to choose the most convenient contact method that suit you.
Our Monitored intruder alarm systems offer an advanced level of protection. Your system shall be installed with a digital data modem, this unit will communicate with our dedicated fully approved monitoring facility (EMCS). This Manned facility can process and handle real time system events. Key holder will be called accordingly. A further upgrade to this facility shall be the utilisation of a Dual Com. This Dual path signalling device uses a Mobile sim in addition to your Phone line to ensure communication is always available should lines be cut. We offer a free consultation with absolutely no obligation advice. For further advice or to book a Free Survey please select our contact page at the top of our website to choose the most convenient contact method that suit you.
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Please select from the following IOS Application QR Links
Idmss. Ipad remote CCTV App.
Explorer. IPhone remote CCTV App.
Explorer. Ipad remote CCTV App
Vocal Comms.
A Vocal communication addon, is a great upgrade for a standard “Bells only” system. With a simple connection to your existing standard telephone line the Addon unit notifies pre programmed keyholders basic alarm information. Vocal communication alarm packages offer the extra level of security required, still within the restraints of a tight budget, you can rest assured that your system is looking after your property when you cant. We offer a free consultation with absolutely no obligation advice. For further advice or to book a Free Survey please select our contact page at the top of our website to choose the most convenient contact method that suit you.
Bells only systems offer a truly cost effective solution to crime prevention. Installed to the latest standards, Bells only offer a visual and audible deterrent to burglars. The system is designed to attract attention to your property on the instance of intrusion detection. We are happy to offer free advice or a free, NO obligation survey to assess your Property risk and your needs. We can also determine the most appropriate installation method, ie, Wired, Wireless or hybrid. Please use our contact page at the top of our website to find the most appropriate contact methods for you.